How do you find the domain of # sqrt(x + 5) #?
1 Answer
Mar 13, 2018
Explanation:
#"the expression inside the radical must be greater than"#
#"or equal to zero"#
#"solve "x+5>=0" for domain"#
#"subtract 5 from both sides"#
#xcancel(+5)cancel(-5)>=0-5#
#rArrx>=-5#
#"domain is "x in RR,x>=-5#
#[-5,+oo)larrcolor(blue)"in interval notation"#
graph{sqrt(x+5) [-10, 10, -5, 5]}
